Western Zone Zone Boys 10 & under - 50 M Back
These rankings show the swimmers' placement within their Zone.They are based on the swimmer's personal best, their current age category, and team; and are calculated from all the meets results.
For each swimmer, you can find the swimmer's ranking, their best time, the corresponding time standard, as well as how much faster the swimmer needs to be to reach the next level. The last columns provide information about the event they achieved this personal best.
Swimmer Rankings
| Ranking | Name | Time | Age | Standard | to Next Standard | Team | Date | Meet | |
|---|---|---|---|---|---|---|---|---|---|
| 751 | Ezekiel Ribellia | 51.02 | 9 | B Min | BB: 49.29 (+1.73s | 3.4%) | Velocity Swimming | 07/24/2026 | 2026 IES LC CHAMPIONSHIPS | |
| 752 | Itai Nadav | 51.04 | 10 | B Min | BB: 49.29 (+1.75s | 3.4%) | Palo Alto Stanford Aquatics | 06/26/2026 | SUNN Silicon Valley CBA+ LCM | |
| 753 | Kaid Petersen | 51.07 | 8 | B Min | BB: 49.29 (+1.78s | 3.5%) | Port Angeles Swim Club | 07/10/2026 | 2026 Sizzlin Summer Splash Copied | |
| 754 | Robert Karpenko | 51.09 | 8 | B Min | BB: 49.29 (+1.80s | 3.5%) | University Place Aquatic Club | 06/06/2026 | 2026 PN VAST Summer Sprint Dist Approved | |
| 755 | Odin Otterstrom | 51.10 | 10 | B Min | BB: 49.29 (+1.81s | 3.5%) | Aquawolves Swimming | 04/24/2026 | 2026 CO Steve Drozda LC Shotgun | |
| 756 | Colin Kershner | 51.10 | 10 | B Min | BB: 49.29 (+1.81s | 3.5%) | Greenwood Tiger Sharks | 04/12/2026 | 2026 CO NJ SBL Pentathlon 12 U | |
| 757 | Rowan Rothman | 51.11 | 7 | B Min | BB: 49.29 (+1.82s | 3.6%) | Evergreen Hurricanes | 05/15/2026 | 2026 CO NJ Ken Kelley Invite | |
| 758 | Bennett Calliham | 51.12 | 9 | B Min | BB: 49.29 (+1.83s | 3.6%) | Loveland Swim Club | 06/27/2026 | 2026 CO Greeley Stampede | |
| 759 | Jeffrey Lou | 51.13 | 9 | B Min | BB: 49.29 (+1.84s | 3.6%) | Seattle Metropolitan Aquatic C | 04/24/2026 | 2026 PN SMAC Spring Showers LC Challenge | |
| 760 | Jude Foote | 51.14 | 9 | B Min | BB: 49.29 (+1.85s | 3.6%) | Hilltop Aquatic Swim Team | 08/01/2025 | 2025 LC Beehive Finale | |
| 761 | Felix Jackson | 51.18 | 9 | B Min | BB: 49.29 (+1.89s | 3.7%) | Tualatin Hills Swim Club | 07/10/2026 | 2026 OSI Arena Summer LC 12 U Championships | |
| 762 | Jeremy Pei | 51.20 | 10 | B Min | BB: 49.29 (+1.91s | 3.7%) | Columbia River Swim Team | 05/16/2026 | 2026 TEAM Showdown | |
| 763 | Alex Wu | 51.21 | 8 | B Min | BB: 49.29 (+1.92s | 3.7%) | Santa Clara Swim Club | 06/20/2026 | Zone 1 South Swim Under The Stars | |
| 764 | Easton Greger | 51.23 | 8 | B Min | BB: 49.29 (+1.94s | 3.8%) | Central Coast Swim Club | 07/10/2026 | 2026 OSI Arena Summer LC 12 U Championships | |
| 765 | Gairen Bean | 51.25 | 10 | B Min | BB: 49.29 (+1.96s | 3.8%) | South Bay Aquatics | 07/11/2025 | 2025 SI SDSA All Ages NTS Meet | |
| 766 | Nolan Sun | 51.26 | 10 | B Min | BB: 49.29 (+1.97s | 3.8%) | Pleasanton Seahawks | 05/23/2026 | 2026 Tiger Aquatics C B BB+ Memorial Day Meet | |
| 767 | Benjamin Foster | 51.26 | 9 | B Min | BB: 49.29 (+1.97s | 3.8%) | Neptune Swimming | 06/12/2026 | Neptune Swimming June LC Meet | |
| 768 | Wyatt Hellickson | 51.28 | 10 | B Min | BB: 49.29 (+1.99s | 3.9%) | Life Time Oregon Swim Team | 06/05/2026 | 2026 CST Summer Invitational | |
| 769 | Samuel Ellsworth | 51.28 | 10 | B Min | BB: 49.29 (+1.99s | 3.9%) | Boise Swim Club | 05/16/2025 | 2025 Spring Fling LC Invitational | |
| 770 | Luke Voeller | 51.29 | 9 | B Min | BB: 49.29 (+2.00s | 3.9%) | Apex | 07/10/2026 | 2026 OSI Arena Summer LC 12 U Championships | |
| 771 | Mason Love | 51.29 | 7 | B Min | BB: 49.29 (+2.00s | 3.9%) | Denver Swim Academy | 07/24/2026 | 2026 CO Age Group LCM State Championships | |
| 772 | Alroy Conry | 51.30 | 8 | B Min | BB: 49.29 (+2.01s | 3.9%) | Aces Swim Club | 04/12/2026 | 2026 CO NJ SBL Pentathlon 12 U | |
| 773 | Alexander Krapp | 51.31 | 10 | B Min | BB: 49.29 (+2.02s | 3.9%) | Thurston Olympians Swim Club | 06/06/2026 | 2026 PN VAST Summer Sprint Dist Approved | |
| 774 | Michael Sohn | 51.32 | 10 | B Min | BB: 49.29 (+2.03s | 4.0%) | Front Range Barracudas | 05/29/2026 | 2026 CO Barracuda Summer Sizzler Invite | |
| 775 | Timothy Huang | 51.32 | 10 | B Min | BB: 49.29 (+2.03s | 4.0%) | Wave Aquatics | 07/09/2026 | 2026 PN Chinook Seattle Age Group Open Appro | |
| 776 | Timur Shafigulin | 51.33 | 10 | B Min | BB: 49.29 (+2.04s | 4.0%) | Wave Aquatics | 05/02/2025 | 2025 PN BC May Flowers | |
| 777 | Beckett Rossi | 51.33 | 9 | B Min | BB: 49.29 (+2.04s | 4.0%) | Bishop Swim Team | 07/10/2026 | 2026 NNA Silver State Championships | |
| 778 | Leif Osborne | 51.35 | 9 | B Min | BB: 49.29 (+2.06s | 4.0%) | Bay Club Aquatics | 06/06/2026 | 2026 SI JBST SPLASH DASH MAX | |
| 779 | Camden Sparenborg | 51.42 | 8 | B Min | BB: 49.29 (+2.13s | 4.1%) | Utah Valley Aquatics | 06/21/2025 | 2025 UT HAST RWB BC Medals Meet | |
| 780 | Roko Perak | 51.43 | 9 | B Min | BB: 49.29 (+2.14s | 4.2%) | Univ. of Denver Hilltoppers | 07/11/2026 | 2026 CO SBL Summer Sizzler | |
| 781 | Peter Duffin | 51.45 | 10 | B Min | BB: 49.29 (+2.16s | 4.2%) | Tri-city Channel Cats | 07/10/2026 | 2026 Sizzlin Summer Splash Copied | |
| 782 | Om Bhuta | 51.45 | 10 | B Min | BB: 49.29 (+2.16s | 4.2%) | California Dolphins Swim Team | 06/13/2026 | PC CDST LC C B BB+ 26 074 | |
| 783 | Ansh Dhuri | 51.47 | 10 | B Min | BB: 49.29 (+2.18s | 4.2%) | Issaquah Swim Team | 05/16/2025 | 2025 PN IST Sockeye Springtime Madness | |
| 784 | Vaughn Jamison | 51.48 | 10 | B Min | BB: 49.29 (+2.19s | 4.3%) | Aspire Aquatics of Colorado | 04/24/2026 | 2026 CO Arena Catch Me If You Can | |
| 785 | Milo Parrocha-Lambert | 51.51 | 9 | B Min | BB: 49.29 (+2.22s | 4.3%) | Seattle Metropolitan Aquatic C | 07/23/2026 | 2026 PN LC 12 U Championships Approved | |
| 786 | Anthony Piazza | 51.52 | 9 | B Min | BB: 49.29 (+2.23s | 4.3%) | Otter Swim Club | 06/12/2026 | 2026 DACA LC CBA Meet | |
| 787 | Zayn Iman | 51.53 | 10 | B Min | BB: 49.29 (+2.24s | 4.3%) | Cascade Swim Club | 09/19/2026 | 2026 PN CSC September Shakeout Approved | |
| 788 | Bodie Hendrickson | 51.55 | 10 | B Min | BB: 49.29 (+2.26s | 4.4%) | Hilltop Aquatic Swim Team | 06/21/2025 | 2025 UT HAST RWB BC Medals Meet | |
| 789 | Jake Gehlert | 51.55 | 9 | B Min | BB: 49.29 (+2.26s | 4.4%) | Piedmont Swim Team | 04/25/2026 | San Ramon Valley Aquatics Long Course C B BB+ | |
| 790 | Andrew Dobing | 51.56 | 10 | B Min | BB: 49.29 (+2.27s | 4.4%) | Excel Aquatics | 04/24/2026 | 2026 Strong Tower Invite | |
| 791 | Arunas Babusis | 51.57 | 9 | B Min | BB: 49.29 (+2.28s | 4.4%) | Apex | 07/12/2025 | 2025 OSI Arena Summer LC 10 U Championships | |
| 792 | Denis Tumelia | 51.57 | 9 | B Min | BB: 49.29 (+2.28s | 4.4%) | Mission Aurora Colorado Swimmi | 06/06/2026 | 2026 CO MACS Suburban League Invite | |
| 793 | Beckett Neeley | 51.60 | 10 | B Min | BB: 49.29 (+2.31s | 4.5%) | Front Range Barracudas | 05/23/2026 | 2026 CO CUDA Vs AQUA Dual | |
| 794 | Maximilian Kuo | 51.62 | 7 | B Min | BB: 49.29 (+2.33s | 4.5%) | California Dolphins Swim Team | 05/02/2026 | Alto Spring Jam CBA | |
| 795 | Kaan Tufan | 51.63 | 9 | B Min | BB: 49.29 (+2.34s | 4.5%) | Santa Clara Swim Club | 05/22/2026 | 2026 Zone 1 South Firecracker 400 | |
| 796 | Oleg Rassadin | 51.63 | 9 | B Min | BB: 49.29 (+2.34s | 4.5%) | Denver Swim Academy | 04/26/2025 | 2025 CO FST Spring LC Fever | |
| 797 | Alexey Kostryukov | 51.64 | 10 | B Min | BB: 49.29 (+2.35s | 4.6%) | Alameda Gators | 06/13/2026 | Orinda PC LC AG C B BB+ | |
| 798 | Dominic Angerami | 51.65 | 10 | B Min | BB: 49.29 (+2.36s | 4.6%) | San Francisco Seals Swim Team | 06/12/2026 | Neptune Swimming June LC Meet | |
| 799 | Nico Hannemann | 51.66 | 10 | B Min | BB: 49.29 (+2.37s | 4.6%) | Cascade Swim Club | 06/19/2026 | 2026 IE VS Starlight Open (USAS) | |
| 800 | Dmitry Temkin | 51.67 | 10 | B Min | BB: 49.29 (+2.38s | 4.6%) | West Coast Aquatics | 05/29/2026 | 2026 TRI CITY INVITATIONAL | |
Disclaimer: This Website is not affiliated with USA Swimming or any Local Swim Committee. The rankings and times displayed on this website are unofficial and should not be viewed as such. We update our information regularly, but we cannot guarantee that the data is accurate, timely, or complete. The only purpose of this website is entertainment. None of the information here should be used for university admission applications.